Now is not the time to quit, it is the time to figure out how to protect your chickens. I felt the same way my grand daughter went to feed her chickens and found them all dead. A bear had gotten them. Later that day she was to take her silkie hen to the fair as her 4H entry. This hen was the one that put up the big fight, for her feathers were from one end of the run to the other. As I started to tear the coop down ny grand daughter started yelling what are you doing, where am I going to put the chickens. So I went out and got an electric fence, which for the most part has kept the bears out. I still lose a few per year to eagles and bob cats. The battle is all worth it when the seven year old brings a friend over to she them HER chickens. So you have lost some chickens to hawks, so you have to give them something to hid under. Plant some bushes or shurbs or place some shade netting where they can give under it when the hawk comes around. Don't let them get the best of you. Build you daughter a tree house so she can watch the chickens.